Hi JoleeI am researching details of 3-cylinder Doxford Engines built prior to turboblowers becoming standard about 1940.
A few main features I've found out so far but need verification: 1. They are famous for economy (helped win the battle of the Atlantic). 2. The throw of the crank for the Upper Cylinder was half the throw for the Lower Cylinder. 3. Some may have had open crankcases. 4. The scavenge pump was driven by a pair of parallel levers connected to the upper No 2 cylinder con rods. 5. Their Engine Frames were cast rather than fabricated.
I've been trawling the www for details so I can build a representative model. There must have been hundreds of these 3-legged Doxfords built but now its hard to find enough drawings to show how they were made and operated.
I'd be very appreciative if any reader could throw some light on this not-too-distant piece of Marine Engineering history.
Dear Sir,There was a 3 cylinder Doxford on at least 1 of the following China Nav. ships ..... Shansi, Soochow, Szechuan, Sinkiang all built UK 1945/46
Didn't they have a ship called the New Guinea Chief also HK built ex ??The China Nav vessel MV Chefoo (sp) which was on the Papua New Guinea service out of Sydney about 1970 and renamed Island Chief was 3 cyl Doxford. She was built in Hong Kong at the company shipyard and the engine was also built at Taikoo yard. The neatest, trouble free Doxford that I sailed on. 6 months on her and not one stoppage
Probably you mean this one?MV Soochow 3 cyl Doxford 20 1/2" x 81 7/8ths" built by Doxfords. Ship built by A & J Inglis Glasgow. The other 3 had 4 cylinder diesels.
Yes they did. I sailed on her. Sydney/Brisbane/Port Moresby/Madang/Lae/Wewak then back to Sydney to start all over again. Great times on a good run. She was a Doxford and built if memory serves me correctly in HK. I think she was originally the Kwangsi but may be wrongDidn't they have a ship called the New Guinea Chief also HK built ex ??
That's always been my opinion because there are only 4 ways to increase the power of a reciprocating engine:I was under the impression that the classic Doxford was a victim of it's own design in that the crankshaft was unable to handle the increasing horsepower of it's rivals and they reached the design limit.
Still a wonderful engine and a famous part of maritime history.
Hi David, if you go to doxford-engine.com you will find a fairly comprehensive history of the Doxford engineI was always told that Doxford's demise was down to them having licensee builders. Obvious from this not completely true. Can anyone expand on this? David V
Yes they did. I sailed on her. Sydney/Brisbane/Port Moresby/Madang/Lae/Wewak then back to Sydney to start all over again. Great times on a good run. She was a Doxford and built if memory serves me correctly in HK. I think she was originally the Kwangsi but may be wrong